SU1357058A1 - Pneudraulic mixer - Google Patents

Abstract

The invention relates to devices for mixing equipment used for the preparation of cement and drilling fluids and dry cement mixtures in the oil and gas industry, and allows to intensify the mixing of the components of the mixture. The pneumatic-hydraulic mixer contains inlets for gas suspension and liquids installed at an angle a mixing chamber 4, an infuser 5 and an outlet pipe 6. A liquid nozzle 3 is located coaxially with a mixing chamber 4 communicated by means of windows 7 with nozzles 1 and 2 for ha zvzvesvei, which are made conical and located at an angle of 60-140 one to another. The confuser 5 is installed directly behind the mixing chamber 4 and has an inlet section in the form of an ellipse, smoothly passing into a cylindrical outlet pipe 6, which ends with a nozzle 8 having deflections on mutually opposite {1X) walls. A nozzle 8 connects a pneumohydraulic mixer with a hydrocyclone 9. 1 c.p., f-ly, 4 Il. (L Loroshok ate oo Powder (rig. 2

Description

The invention relates to a mixing technique that displaces various powdered materials with a liquid and powdered materials with each other, which can be used in the oil and gas industry for the preparation of tampon and drilling fluids and

dry cement mixtures, required by IQ, due to the narrowing of the flow area of cementing wells, as well as other solutions and dry mixtures in construction, chemical and other industrial sectors.

The goal of the invention is to intensify the mixing of the mixture components.

In FIG. 1 and 2 show a pneumohydraulic mixer in two projections, a general view; in fig. 3 is a section AA in FIG. 2; in fig. 4 - pipe, cut.

The pneumatichydraulic mixer contains inlet pipes for gas suspension 1 and 2 and liquids 3, mounted at an angle, a mixing chamber, a confuser 5 and an outlet pipe 6, a branch pipe 3 for liquid, is located coaxially with a mixing chamber 4, communicated using OKON 7. 1 and 2 for a gas suspension, which 30 being in solution, creates a boiling

made conical and arranged at an angle of 60-140 ° to one another.

The confuser 5 is installed directly behind the mixing chamber 4 and has an inlet section in the form of an ellipse, smoothly passing into a cylindrical outlet pipe 6, which ends with a nozzle 8 having deflections located on mutually opposite walls and offset one from another to form a channel of equal cross section. A nozzle 8 connects a pneumohydraulic mixer with a hydrocyclone 9. A nozzle 3 for a liquid is provided with a flow regulator 10 with a set of interchangeable ejection nozzles.

Pneumatics mixer works as follows.

First, a fluid is supplied to the Pneumatichydical mixer, which passage through the ejector hole of a defined flow area installed in the controller 10 creates a vacuum in the mixing chamber 4.

When the steady state required flow of fluid into chamber 4 through inlet nozzles 1 is achieved by a stream of compressed air (for example,

mixing units, chamber feeders, cement trucks, pneumatic elevators, etc.) aerated powdered material (e.g., cement, bentonite, barite, or mixtures thereof) is supplied. When a powdered material enters a cone-shaped inlet 1, its concentration increases with a simultaneous increase in the flow rate. In the cavity of chamber 4, by the action of an ejection effect A, the streams of powdered material tend to approach the axial flow line of the fluid flowing out of the nozzle, collide with it inside the confusor 5 and get carried away to the outlet pipe 6 with the nozzle 8, where the components of the mixture are intensively mixed during joint flow and additionally due to a change in the direction (deviations) of the flow, turbulence and collisions of the deflected near-wall parts of the solution flow formed by the deflections ayuschy poroshkoobr also demanded along with pictures of pne- vmotransportnoy installation and found to

the flow, which intensifies the mixing process, and then in hydrocyclone 9 is separated from the solution. In this case, the solution, having a significant velocity head, passage through a hydrocyclone

9and flowing out of it, gets extra mixing.

In the preparation of dry mixes of various powdered materials. Two types of powdery materials are fed into the mixing chamber and through the inlet ports 1 by pneumatic conveying, and through the ejector nozzle of the regulator

10 instead of liquid, it supplies compressed air that performs the functions of the worker

agent and intensifying the process of mixing the components of the dry mixture.

Intensification of mixing the components of the mixture increases the degree of hydration of the particles of the powdered material in the liquid up to 90-95%, thereby providing the necessary properties of the mixture and improving the quality of drilling, cementing, insulation and other works in oil and gas wells, as well as construction, chemical and other industries with

The result is a high productivity in preparing a mixture up to 40 l / s.

Claims (2)

Claim 1. Pneumatichydical mixer containing inlet pipes for gas suspension and liquid installed at an angle, mixing chamber, condenser and outlet pipe, which is due to the fact that, in order to intensify the mixing of the components of the mixture, it is equipped with an additional pipe the gas suspension and the liquid outlet are located coaxially with the mixing chamber, communicated by means of windows with suspension, while the gas suspension pipes are made conical and are located at an angle of 60-140 ° OD to another, and the confuser is installed directly behind the mixing chamber and has an inlet section in the form of an ellipse that fusibly converts into a cylindrical outlet pipe. 2. The mixer according to claim 1, wherein the discharge pipe ends with a pipe having deflections located on mutually opposite walls and offset from the other with the formation of a channel of equal cross section. / fil ff / fffС / 776 srcg.1 Deflections Editor I. Gorna Compiled by T, Kruglov Tehred l, Serdyukova, Proofreader V. But ha Order 5920/5 Circulation 565 Subscription VNIIPI USSR State Committee for inventions and discoveries, 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 FIG.